Depth or liquid-level gauge



DEPTH 0h UQUH) 'LEYEL GAUGE.

APPLICATION FILED JAIL 2i, I921.

', V M r/$ 491 ATTORNEY l was semetimes suiiieien to unfavori'xppliemim whom 22 qua-a3: omwewi;

knew; $11M 1, C

A; resie;

have inven beai a new zine use v i ent in Depth 01' lipid-Level Gauges, M which K fil'iewing is a .I, u D11. or

movvhere e iv ceuiiecued. bi;

iiquid :1

eating :ter 1 v0 evaporation A in practice diet the shame 0i" ievei; due to such iesses which is be ne t 21k ably the accuracy 0% the gauge.

The object of this invention is to pi'oviaie means whereby any loss of liquid in faiieeeu stunt level chamber is co:

For this purpose 1 prev d e pumoh "Z rest'ngeozi The closed at he '5 sisting {if a puiupiieirei and a pisiioii She latter being caused in oscillate up down ihiough the movements 0f the veiiicie e1 vessel, 01 to and {re through the centrifuge force when the vehicie 0v vessel takes :1 curve .01 ihi'ough the iaueral form hen the vehicle or vessel esciiiates. ieueieiiy.

in ac cordance Wiih his invention the pump ie incorporated with the gauge, the intake 0f the pump ieoiiununicatingmvith the liquid supply, and the outlet with the constant ievei chamber, which is provided with a top cover with overflow openings, whereby a constant level immeinteined no matter how much liquid is pumped inie the chamber.

A spring may be arranged on one side of the piston, which aft-2' having; been cempressed by the movement, of the piston, v. react and. move the piston in the opposite direction ami thereby force the liquid up Quill through the tube into the cqnsfia nt level he (ever chamber. e remviis to the main supply in the tank 3. The liquid in the chamber 5 will therefore be main tained at a constant level and the gauge will function accurately at all times.

In Fig. 2 the pump barrel 17 and piston 18 are placed more or less horizontal and'in sueha position on the vessel that in the move ment of the vesselflo" vehicle in a curve the centrifugal force Will move the piston in one or the other direction, aswill the lateral movement when the vessel or vehicle lurches or oscillates sidewise, drawing in liquid. into the pump barrel 17 and subsequently press up the liquid into the constant level chamber. F or instance, when the piston is moved to the right in Fig. 2 the liquid will flow through the openings 19 and fill the space 520 in front of the piston, and when moved to the left will pre the liquid up through the passage 21 in the constant level chamber bottom 22 and the tube 23 into theconstant level chamber 24. The pump may be double acting and a connection 25 made from the other end of the pump barrel to the constant level chamber as shown in dotted lines.

The aforesaid constructions may be combined as shown in Fig. 3, where the piston 26 oscillates in the vertical pump barrel 27,

and the piston 28 movesto and fro in the horizontal pump barrel 29. The liquid is forced up through the tubes 30 and 31 resp. into the constant level chamber 32 which provided with the cover 16 with overflow holes 15. Other variations in details of construction and arrangement will readily suggest themselves and it is to be understood that the invention, except as pointed out in the claims, is not limited to the precise construction and arrangement shown and de scribed herein.

l claim as my invention 1. In an apparatus for indicating the depth or level of a liquid supply on movable vehicles or vessels, and operated throu h the difference in the pressures of thcliquul in the supply tank and of the liquid column in an auxiliary chamber of constant level, the combination of two chambers and adapted to be filled with liquid, an elastic wall separating the chambers, an indicating mechanism arranged to be operated by the movement of the elastic wall, a supply chamber containing the liquid the level of which is to be indicated, and connected with one of said first named chambers an auxiliary chamber in which the liquid is to be maintained at a constant level and connected with the other of first named hers, a pump barrel having inlet con-- nected to the liquid supply and its outlet 6& connected to the auxiliary chamber, and piston freely movable by its own inertia in said barrel.

2. In an apparatus for indicating the depth or level of a liquid supply on movable 0 vehicles or vessels, and operated through the difference in the pressures of the liquid in the supply tank and of the liquid column in an auxiliary chamber of constant level, the combination of two chambers and adapted. to be filled with liquid, an elastic wail separating the chambers, an indicating mech anism arranged to be operated by the movement of the elastic wall, supply chamber containing the liquid, the level of which be indicated, and connected with one 123' s c first named chambers, an auxiliary chamber in which the liquid is he maintained at a constant level, coni'iected with the other of said first named chambers, a pump rel having its inlet connected to the liquid. supply and its outlet connected to the anailiary chamber, and a p in "freely movable by its own inertia in said barrel, the a: l iary chamber having a cover provided w, openings through which the of liquid may return to the liquid supply.

3. In an apparatus for indicating: tlie depth or level of a liquid supply on movable vehicles or vessels, and operated thro' "ll the difference in the pressure 01 the li uid the supply tank and of the liquid column in an auxiliary chamber of constant level, the combination of two chambers and adapted to be filled with liquid, an elastic wall separating the chambers, an indicating nicchs nism arranged to be operated. by the movement of the elastic wall, a supply chamber containing the liquid the level ()2 to be indicated, and connected -with said first named chambers, an auxin V chamber in which the liquid is to he inai tained at a constant level and connected w the other of said first named chanibe pump barrel having inlet cont the liquid supply and its outlet connc the auxiliary chamber, and nioval'ile by i i own and a spring" coop-era i." /J;ai'l,

Witnesses J STEUI, laliinnr il /rais ns 

